LONDON—Twenty four hours after being booed for having the audacity to take down a tennis great, Alexander Zverev returned to topple another one as he stunned Novak Djokovic to win the ATP Finals title on Sunday.
Zverev, billed as the player most likely to lead the sport into a new golden era once the holy trinity of Roger Federer, Djokovic and Rafael Nadal have hung up their rackets, took full advantage of an off-key Serb to win 6-4 6-3.